Improvement in rotary pumps



Vits construction and operation.

UNITED STATES PHILIP UMHOLTZ, OF TREMONT, PENNSYLVANIA.

IMPROVEMENT IN ROTARY PUMPS.

Specification forming part of Letters Patent N0. 48,604, dated July 4,1865.

4 and exact description of the nature, construction, and o )eration ofthe same reference being had to the accompanying drawings, inak- 4 ingpart of this specification, in which- Figure l is a side elevation ofthepump, the

movable side plate being removed, and a portion ofthe rim and rotatingcylinder being broken away to show more clearly the working parts.

Fig. 2 is a vertical section on the line a: m, Fig. 1,'the`rotatingcylinder being supposed to be rotated in the direction of the arrow, sothat y y thereon shall be inline with w Similar letters denote likeparts iu the two igures.

This pump is constructed with a vibrating valveron the `periphery ot thecylinder which rotates within the casing, the water which en` ters froma supply-pipe being drawn from the annular space surrounding thecylinder into the interior of the latter, and discharged atan orifice inthe sideV of the casing.

To enable others skilled in the art to which my invention appertains tofullywnnderstand and use the same, I will proceed to describe A is anouter casing or cylindrical box containing an annular recess Within it,which is traversed by a piston, G, pivoted at H, so as to vibrate withinthe slot in the periphery of an open-ended spoked cylinder, C, which isattached to a shaft, D, and driven by a crank, E F. The said annularspace within the outer casing communicates by the pipe M with thewater-supply, and as the cylinder C, under the impulse ot' the crank,rotates in the direction of the arrow marked upon it theinwardlyprojecting arm G of the valve G strikes against the pin K,whichis permanently attached to the side ot' the casing, and trips the valve,so that it passes the abutment on the casing, which is seen in Fig.limmediately above the watersupply aperture M. As soon as the valve Grpasses the abutment it is again thrown out by the spring I, so as tooccupy the annular space in the cylindrical casing, being restrainedfrom too great a movement in that direction by the stopper J, which issecured to the inner side of the rotary cylinder, and, of course,rotates Witht, so as to retain the valve in the right position, notquite in contact with the sides ot' the annular space, thus preventingthe friction ofthe valve ou the sides of the annular space. As thecylinder revolves the water from the pipe M, being pressed against bythe valve, and being prevented from escaping forward, owing to thefitting ofthe cylinderagainst the face of the abutment, is, crowded intothe interior of the cylinder and escapes by the pipe or opening N.

The plate B is secured to the side of the casing A by means ot' thescrews L through it and the packing-ring.

Having thus fully, clearly, and exactly described thenature,construction, and operation of my improved rotary pump, what I claimtherein as new, and desire to secure by Iletters Patent, is-

The combination ofthe casing A and its plate VB and pin K with therotary cylinder C, vibrating valve Gr G',spring L, and stopper J,substantially as described and represented.

' l?. UMHOLTZ. lWitnesses:

ALEXR. A. C. KL A UoKE, CHARLES D. SMITH.

